CN101239830B - Low-temperature burning high-aluminum refractory brick and preparation method thereof - Google Patents
Low-temperature burning high-aluminum refractory brick and preparation method thereof Download PDFInfo
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- CN101239830B CN101239830B CN2008100493766A CN200810049376A CN101239830B CN 101239830 B CN101239830 B CN 101239830B CN 2008100493766 A CN2008100493766 A CN 2008100493766A CN 200810049376 A CN200810049376 A CN 200810049376A CN 101239830 B CN101239830 B CN 101239830B
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- agalmatolite
- dry powder
- refractory brick
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Abstract
The present invention provides a low-temperature braking high-aluminum refractory brick and the preparing method thereof, and the invention is characterized in that the refractory brick is prepared by the following main raw material and bonding agent; wherein: the main material comprises the raw material with the following weight proportion: wherein the bauxite chamotte with granularity 3-0.088mm for 50-70%, bauxite chamotte with granularity less than 0.088 for 7-20%, emery with granularity less than 0.088 for 5-20%, dry powder shaped pyrophyllite for 2-10%, and dry powder shaped refractory clay for 5-20%; and the adding amount of the bonding agent is 10-20% of the weight of the raw material. The high-alumina brick is obtained using the low ore grade bauxite chamotte with low temperature 1250-1350 DEG C, and the high-quality refractory brick has the advantages of: ordinary-temperature compressive strength above 80MPa, and the load softening staring temperature above 1580 DEG C.
Description
Technical field
The invention belongs to the refractory materials production technical field, relate to a kind of low-temperature burning high-aluminum refractory brick and preparation method thereof.This refractory brick can be used for hot metal mixer, cupola furnace, iron ladle, steel teeming ladle etc. with the metal melt contact site and require the strong privileged sites such as limestone kiln of alkali resistant aggressiveness.
Technical background
The common alumina firebrick of many employings such as hot metal mixer, cupola furnace, iron ladle, steel teeming ladle and limestone kiln.Because common alumina firebrick exists compressive strength lower, void content is higher, and disadvantages such as anti-erosion difference limit a large amount of uses of common alumina firebrick.The research worker has researched and developed aluminium silicon carbide, aluminium chromium silicon carbide refractory brick etc. in order to satisfy above-mentioned stove particular requirement, has significantly improved the erosion-resisting characteristics to molten metal.But along with the fast development of iron and steel technology, the purifying treatment of molten iron, molten steel also makes refractory brick such as aluminium silicon carbide, the carbonization of aluminium chromium be siliceous can't satisfy processing requirement fully.Especially its antioxidant property is poor, makes that the erosion of slag lining is serious, influences kiln work-ing life.Aluminium silicon carbide, the carbonization of aluminium chromium are siliceous etc., and refractory brick cost height, complex manufacturing, firing temperature height also are unfavorable for the development of current recycling economy.
Summary of the invention
Purpose of the present invention making full use of under resource, the energy-saving and cost-reducing prerequisite, provides a kind of low-temperature burning high-aluminum refractory brick and preparation method thereof just at existing weak point in the above-mentioned prior art.This high-alumina refractory brick is to utilize low grade material, at the low premium high-alumina refractory brick of producing under the temperature that burns till, it can replace the common high alumina of prior art and aluminium silicon carbide, aluminium chromium silicon carbide refractory brick, is widely used in hot metal mixer, cupola furnace, iron ladle, steel teeming ladle etc. with the metal melt contact site and require the strong positions such as limestone kiln of alkali resistant aggressiveness.
The object of the invention can be achieved through the following technical solutions:
Low-temperature burning high-aluminum refractory brick of the present invention is to be prepared from by following major ingredient and wedding agent; Wherein: described major ingredient comprises the raw material of following weight ratio: wherein granularity is the bauxite chamotte 50-70%, granularity of 3-0.088mm less than the high bauxite clinker powder 7-20% of 0.088mm, granularity less than 0.088mm lapis amiridis 5-20%, dry powder agalmatolite 2-10%, dry powder fireclay 5-20%; The add-on of described wedding agent is the 10-20% of major ingredient weight.
Wedding agent described in the present invention comprises the raw material of following weight ratio: wherein agalmatolite 30-50%, fireclay powder 20-40%, liquefactent 0.2-2.0%, water 20-30%; And through water mill to granularity less than 200 purpose mud.
Wedding agent described in the present invention comprises the raw material of following weight ratio: wherein agalmatolite 40-68%, fireclay powder 30-58%, liquefactent 0.2-2.0%, and adopt dry powder altogether grinding process make powder mix, fineness of grinding should be all less than 320 orders altogether.
Liquefactent described in the present invention is made up of the raw material of following weight ratio: wherein tripoly phosphate sodium STPP 0-70%, yellow soda ash 0-85%, water glass 0-50%.
Corundum described in the present invention is one or more in white fused alumina, sub-white corundum, brown corundum or the plate diamond spar; Described agalmatolite is a kind of in agalmatolite grog, the agalmatolite raw material or two kinds.
Material composition described in the present invention is by weight: Al in the bauxite chamotte
2O
3Content 〉=68%, white fused alumina in Al
2O
3Content 〉=98%, sub-white corundum in Al
2O
3Content 〉=97%, brown corundum in Al
2O
3Content 〉=95%, plate diamond spar in Al
2O
3Content 〉=99%.
The preparation method of low-temperature burning high-aluminum refractory brick of the present invention adopts traditional brickmaking technology to carry out mixing, mechanical pressing and body drying, go into tunnel furnace afterwards and fire, its firing temperature adopts 1250-1350 ℃ of being lower than prior art to burn till (firing temperature of prior art is＞1440 ℃).
Compared to existing technology, the present invention has following beneficial effect:
A, agalmatolite enrich in china natural resources, are a kind of high quality raw material of making refractory materials, but develop less all the time.The present invention utilizes that the anti-metal slagging of retractory of agalmatolite is strong, high temperature microdilatancy, non-dross performance, has overcome shortcomings such as common alumina firebrick high-temperature shrinkage, brickwork joint melting loss are big.Agalmatolite and fireclay water mill are made mud and are added with the wedding agent form, also can grind altogether with dry powder with fireclay dry powder to add, and fineness of grinding should be intended to improve dispersed homogeneous degree all less than 320 orders altogether.
B, can reduce alumine raw material grade requirement.No matter be down-draft kiln material or rotary kiln material or shaft furnace material, as long as Al
2O
3Content meets the demands, and generally can both use.The present invention is to alumine Al
2O
3Content requirement is not high, so need not to refer in particular to high grade bauxite or one-level alumina, the above alumina raw of secondary all can be used, and this is significant undoubtedly in the today of being becoming tight resource day.
C, required firing temperature are low.The high-alumina refractory brick firing temperature of prior art is＞1440 ℃, sometimes in order to guarantee that product index has to adopt higher firing temperature.And firing temperature of the present invention is 1250-1350 ℃.The present invention when guaranteeing that product performance are better than general alumina firebrick, reduces firing temperature by raw material, production formula and controlling of production process, and energy-saving and cost-reducing effect of preserving the ecological environment is particularly evident.
The present invention and prior art high alumina brick performance synopsis
The present invention adopts low-temperature burning high-aluminum refractory brick, in the today of being becoming tight the energy, alumine resource day, utilize low-grade bauxite chamotte, through 1250-1350 ℃ of easy fired, produce cold crushing strength and be＞1580 ℃ premium high-alumina refractory brick for＞80MPa, loading softening begin temperature.This refractory brick cost is low, has application value.
Embodiment
The present invention is further described below with reference to embodiment, but does not limit the present invention.
Embodiment 1
A, preparation major ingredient: (granularity is 3-0.088mm, Al to get bauxite chamotte by weight
2O
3Content 82.15%) 63%, (granularity is less than 0.088mm, Al for high bauxite clinker powder
2O
3Content 80.05%) 7%, (granularity is less than 0.088mm, Al for white alundum powder
2O
3Content 98.70%) 20%, the agalmatolite grog is standby in dry powder 6% in dry powder 4%, fireclay;
B, the preparation wedding agent: get agalmatolite grog 40%, fireclay powder 30%, liquefactent 2.0%, water 28% by weight, through water mill to granularity less than 200 orders, make mud; Wherein said liquefactent is made up of the raw material of following weight ratio: tripoly phosphate sodium STPP 20%, yellow soda ash 80%;
C, wedding agent is added in the major ingredient, add-on be in the major ingredient each raw material weight sum 12%; Adopt traditional brickmaking technology to carry out mixing, mechanical pressing, body drying, burn till for 1340 ℃ through tunnel furnace.
The finished product cold crushing strength of this embodiment is that to begin temperature be 1620 ℃, apparent porosity 16%, volume density 2.8g/cm for 120MPa, loading softening
3
Embodiment 2
A, preparation major ingredient: (granularity is 3-0.088mm, Al to get bauxite chamotte by weight
2O
3Content 78.32%) 65%, (granularity is less than 0.088mm, Al for high bauxite clinker powder
2O
3Content 76.70%) 13%, (granularity is less than 0.088mm, Al for the plate diamond spar powder
2O
3Content 99.04%) 10%, the agalmatolite raw material are standby in dry powder 6% in dry powder 6%, fireclay;
B, the preparation wedding agent: get agalmatolite raw material 43%, fireclay powder 30%, liquefactent 2.0%, water 25% by weight, through water mill to granularity less than 200 orders, make mud; Wherein said liquefactent is made up of the raw material of following weight ratio: tripoly phosphate sodium STPP 50%, water glass 50%;
C, wedding agent is added in the major ingredient, add-on be in the major ingredient each raw material weight sum 16%; Adopt traditional brickmaking technology to carry out mixing, mechanical pressing, body drying, burn till for 1270 ℃ through tunnel furnace.
The finished product cold crushing strength of this embodiment is that to begin temperature be 1600 ℃, apparent porosity 16.5%, volume density 2.75g/cm for 113MPa, loading softening
3
Embodiment 3
A, preparation major ingredient: (granularity is 3-0.088mm, Al to get bauxite chamotte by weight
2O
3Content 71.57%) 65%, (granularity is less than 0.088mm, Al for high bauxite clinker powder
2O
3Content 68.70%) 11%, (granularity is less than 0.088mm, Al for the sub-white corundum powder
2O
3Content 97.86%) 10%, the agalmatolite raw material are standby in dry powder 6% in dry powder 8%, fireclay;
B, preparation wedding agent: get agalmatolite raw material 60%, fireclay powder 39%, liquefactent 1.0% by weight and adopt the common grinding process of dry powder to make powder mix, fineness of grinding should be all less than 320 orders altogether.Wherein said liquefactent is made up of the raw material of following weight ratio: yellow soda ash 80%, water glass 20%;
C, wedding agent is added in the major ingredient, add-on be in the major ingredient each raw material weight sum 10%; Adopt traditional brickmaking technology to carry out mixing, mechanical pressing, body drying, burn till for 1300 ℃ through tunnel furnace.
The finished product cold crushing strength of this embodiment is that to begin temperature be 1580 ℃, apparent porosity 18%, volume density 2.6g/cm for 92MPa, loading softening
3
Claims (1)
1. low-temperature burning high-aluminum refractory brick, it is characterized in that: described refractory brick is to be prepared from by following major ingredient and wedding agent; Wherein: described major ingredient comprises the raw material of following weight ratio: wherein granularity is the bauxite chamotte 50-70%, granularity of 3-0.088mm less than the high bauxite clinker powder 7-20% of 0.088mm, granularity less than 0.088mm lapis amiridis 5-20%, dry powder agalmatolite 2-10%, dry powder fireclay 5-20%; Described wedding agent is muddy or dry powder, and the add-on of wedding agent is the 10-20% of major ingredient weight; Described muddy wedding agent comprises the raw material of following weight ratio: wherein agalmatolite 30-50%, fireclay powder 20-40%, liquefactent 0.2-2.0%, water 20-30%; And through water mill to granularity less than 200 purpose mud; Described liquefactent is formed by any two kinds in the raw material of following weight ratio: wherein tripoly phosphate sodium STPP 0-70%, yellow soda ash 0-85%, water glass 0-50%; Described dry powder wedding agent comprises the raw material of following weight ratio: wherein agalmatolite 40-68%, fireclay powder 30-58%, liquefactent 0.2-2.0%, and adopt dry powder altogether grinding process make powder mix, fineness of grinding should be all less than 320 orders altogether; Described liquefactent is formed by any two kinds in the raw material of following weight ratio: wherein tripoly phosphate sodium STPP 0-70%, yellow soda ash 0-85%, water glass 0-50%; Described agalmatolite is a kind of in agalmatolite grog, the agalmatolite raw material or two kinds.
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|---|---|---|---|
| CN2008100493766A CN101239830B (en) | 2008-03-19 | 2008-03-19 | Low-temperature burning high-aluminum refractory brick and preparation method thereof |
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| CN2008100493766A CN101239830B (en) | 2008-03-19 | 2008-03-19 | Low-temperature burning high-aluminum refractory brick and preparation method thereof |
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| CN101239830B true CN101239830B (en) | 2011-05-04 |
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Families Citing this family (17)
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| CN101643363B (en) * | 2009-09-01 | 2012-03-21 | 赵海军 | Clay pouring iron brick with low iron and preparation method thereof |
| CN101830714A (en) * | 2010-04-27 | 2010-09-15 | 北京通达耐火技术股份有限公司 | Alumina-silicon nitride iron compound abrasive brick for large-size cement kiln and manufacture method thereof |
| CN102887714A (en) * | 2011-07-20 | 2013-01-23 | 郑州汇特耐火材料有限公司 | Environmentally-friendly anti-stripping high-alumina brick and preparation method thereof |
| CN102417357A (en) * | 2011-07-22 | 2012-04-18 | 郑州京华耐火材料实业有限公司 | Pyrophyllite-silicon carbide carbon brick for ladle and preparation method thereof |
| CN102773906B (en) * | 2012-07-09 | 2014-10-08 | 郑州东方安彩耐火材料有限公司 | Corundum sand mold for producing fused-cast alumina refractory materials and production technique thereof |
| CN103102167B (en) * | 2013-03-08 | 2014-03-26 | 王秀福 | High-temperature wear-resistant air brick and production method thereof |
| CN103833396B (en) * | 2014-02-24 | 2015-01-14 | 宜兴瑞泰耐火材料有限公司 | High-strength high-alumina brick prepared from homogenized alumina for calcium carbide furnace and preparation method thereof |
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| CN105130472A (en) * | 2015-09-10 | 2015-12-09 | 中钢集团耐火材料有限公司 | Low-cost high-aluminum fireproof brick |
| CN105439546A (en) * | 2015-11-05 | 2016-03-30 | 浙江长兴强立耐火材料有限公司 | Corundum-mullite funnelled brick |
| CN105461329A (en) * | 2015-11-05 | 2016-04-06 | 浙江长兴强立耐火材料有限公司 | Preparation method of corundum-mullite funnel brick |
| CN106348768A (en) * | 2016-08-27 | 2017-01-25 | 明光瑞尔非金属材料有限公司 | Manufacturing technique of metal smelting furnace liner |
| CN107140956B (en) * | 2017-06-30 | 2019-09-10 | 武汉科技大学 | A kind of firing high-alumina refractory brick and preparation method thereof |
| CN111233490B (en) * | 2020-02-21 | 2022-06-14 | 鞍山腾泰耐火材料有限公司 | Aluminum-based binder for sintering high-alumina bricks and preparation method thereof |
| CN111410520B (en) * | 2020-04-18 | 2022-05-24 | 山东鲁铭新型材料股份有限公司 | Pyrophyllite unburned brick for ferrochrome alloy ladle |
| CN111302819A (en) * | 2020-04-22 | 2020-06-19 | 河南省宏达炉业有限公司 | Firebrick for combustion chamber of belt sintering machine and preparation method thereof |
| CN112624773B (en) * | 2020-10-26 | 2023-03-28 | 郑州金泰科技特种耐火材料有限公司 | Aluminum silicon carbide carbon brick and preparation method thereof |
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